As long as the internal GPS is functional, it could work with S&T, even if the specs say it is not compatible. Usually the baud rate is an issue, but that could be overcome with a free GpsGate, which could serve you as a baud rate convertor http://www.laptopgpsworld.com/2531-gpsgate
I have tried several things on this tablet. Nothing seems to work for me.
I have tried disabling / enabling and reinstalling the driver for the globe trotter m067xx device.
I have changed port settings to 4800 baud rate.
I have installed the GpsGate as you suggested.
Still no luck... the MS Streets & Trips do not see the gps device on this tablet.
I must be doing something wrong.... but what?